Buggy code:
public class HostAgent { final String managementIp ; final String userName ; final String passWord ; final SSHClient sshClient ; public HostAgent ( HostServerConfig hostConfig ) { } public void connect ( ) throws IOException , TransportException , UserAuthException { } public void disconnect ( ) throws IOException { } public boolean createBridge ( String bridgeName ) throws IOException , TransportException , UserAuthException { } public boolean setBridgeDpid ( String bridgeName , String dpid ) throws IOException , TransportException , UserAuthException { } public int getPort ( String bridgeName , String macAddress ) throws IOException , TransportException , UserAuthException { } public boolean setController ( String bridgeName , String controllerIp ) throws IOException , TransportException , UserAuthException { } public boolean networkExist ( String networkName ) throws IOException , TransportException , UserAuthException { } public boolean deleteNetwork ( String networkName ) throws IOException , TransportException , UserAuthException { } public boolean createNetworkFromXml ( String remoteXmlFilePath ) throws IOException , TransportException , UserAuthException { } public boolean createVMFromXml ( String remoteXmlFilePath ) throws IOException , TransportException , UserAuthException { } public boolean createDir ( String remoteDir ) throws IOException , TransportException , UserAuthException { } public void uploadFile ( String localFilePath , String remoteFilePath ) throws IOException , TransportException , UserAuthException { } public boolean copyFile ( String remoteSrcFile , String remoteDstFile ) throws IOException , TransportException , UserAuthException { } public boolean removeFilesFromDir ( String remoteDir ) throws IOException , TransportException , UserAuthException { } public boolean fileExistInDir ( String remoteDir , String fileName ) throws IOException , TransportException , UserAuthException { } public String [ ] createSelectedRemoveList ( String remoteDir , List < String > fileList ) throws IOException , TransportException , UserAuthException { } public boolean removeFile ( String remoteFilePath ) throws IOException , TransportException , UserAuthException { } public boolean destroyVm ( String vmName ) throws IOException , TransportException , UserAuthException { } public int createTunnelTo ( HostServer src , HostServer dst , int vni ) throws IOException , TransportException , UserAuthException { } public boolean createTunnelPort ( String portName , String bridgeName , String dstIp , int tunnelPort , int vniIndex ) throws IOException , TransportException , UserAuthException { } public boolean createRouteTo ( HostServer src , HostServer dst ) throws IOException , TransportException , UserAuthException { } public boolean addPatchPort ( String bridgeName , String localPortName , int localPortNum , String remotePortName ) throws IOException , TransportException , UserAuthException { } public boolean addFlow ( String bridgeName , int inPort , int outPort ) throws IOException , TransportException , UserAuthException { } public boolean addStatFlow ( String bridgeName , int inPort , int outPort , int srcDcIndex , int dstDcIndex ) throws IOException , TransportException , UserAuthException { byte [ ] newDstAddr = new byte [ 4 ] ; newDstAddr [ 0 ] = ( ( byte ) ( dstDcIndex & 255 ) ) ; newDstAddr [ 1 ] = ( ( byte ) ( srcDcIndex & 255 ) ) ; newDstAddr [ 2 ] = 0 ; newDstAddr [ 3 ] = 0 ; final Session session = sshClient . startSession ( ) ; <START_BUG> final Session . Command command = session . exec ( ( ( ( ( ( ( ( "sudo<seq2seq4repair_space>ovs-ofctl<seq2seq4repair_space>add-flow<seq2seq4repair_space>" + bridgeName ) + "<seq2seq4repair_space>in_port=" ) + ( Integer . toString ( inPort ) ) ) + ",nw_dst=" ) + ( IPv4Address . of ( newDstAddr ) . toString ( ) ) ) + ",actions=output:" ) + ( Integer . toString ( outPort ) ) ) ) ; <END_BUG> command . join ( 60 , TimeUnit . SECONDS ) ; if ( ( command . getExitStatus ( ) . intValue ( ) ) == 0 ) { session . close ( ) ; return true ; } else { session . close ( ) ; return false ; } } public boolean addFlowDstMac ( String bridgeName , int inPort , int outPort , String dstMac ) throws IOException , TransportException , UserAuthException { } public boolean createRouteToGateway ( String destinationIp , String gatewayIp , String devName ) throws IOException , TransportException , UserAuthException { } public boolean addPort ( String bridgeName , String port , int ofPort ) throws IOException , TransportException , UserAuthException { } public boolean removePort ( String bridgeName , String port ) throws IOException , TransportException , UserAuthException { } public boolean upPort ( String port , String ip ) throws IOException , TransportException , UserAuthException { } public String getMac ( String bridgeName , String port ) throws IOException , TransportException , UserAuthException { } }

Fix:
final Session . Command command = session . exec ( ( ( ( ( ( "sudo<seq2seq4repair_space>ovs-ofctl<seq2seq4repair_space>add-flow<seq2seq4repair_space>" + bridgeName ) + "<seq2seq4repair_space>ip,nw_dst=" ) + ( IPv4Address . of ( newDstAddr ) . toString ( ) ) ) + ",actions=output:" ) + ( Integer . toString ( outPort ) ) ) ) ;